Improvement in tenon-machines



about affairs sind ditta WILLIAM GILMORE, OF HUDSON, NEW JERSEASSIGNORTO IIIMSELF AND HENRY M.A ROGERS, OF SAME'PLAOE.

Letters Patent No. 113,873, dated April 128; 1871.

IMPROVEMENT lN 'I'EN'ON-MAQHINES.v

The Schedule referred to in these Letters Patent and making part of thesame.

To whom 'it may concern Be it known that I, WILLIAM GrLMoRn, of Hud-lson, in the county of Hudson and State of New Jersey, have inventedcertain new and useful Improvements in lenoning-Machines; and I dohereby declare the following to be a fuii and exact description of thesaine, reference being had to the drawing that accompanies and forms apart of this speciation, in which- Y Figure l is a side elevation of themachine in full operation.

Figure 2 is an enlarged view of the pawl-arm and ratchet-wheel.

Figure 3 is an enlarged View oi' the face or front end.

Figure 4 is an enlarged view oi' the knives or cutters, detach ed.

My invention consists in improving the machine which I patented the 24thday of November, 1868.

The nature of this as well as that invention relates to machines forforming tenons on and for wood framing, and consists in the arrangementof a sliding clamping-carriage, I5, having an adjustable clamp,^C, gaugeD. By referring to g. l the object of this car# riage will be seen.

The clamp O holds the material on or out of which the tenen isto be madeor formed, the drop E assisting the clamp by keeping the material downon the table G.

The use of the gauge D is hereinafter delineated.

As it will be seen, the whole duty of this carriage is to advance orpush forward to the cutters H H the material out of which the tenon isto be cut, and hold or keep the said material iu its proper position.

Now, in order for this carriage to move the board or plank, or whateverit may be, forward, there must v be some power to move it, (thecarriage.) I have chosen a sliding or railroad motion the carriagesliding or running on ways I I, provided for that purpose.

We will nov;r examine tig. 2, which gives us a full view of themechanism which moves the carriage, (of course it being understood thatall our power comes from the treadle, see iig. l.)

The pawl and pawl-arrn J' moves the ratchet-wheel K one or two(according to how it is set or reguiated) teeth backward every time thecutters go up.

The ratchet-wheel being ou the saine shaft as the pinion L they must tuntogether; the cogs of the pinion going backward move the rack M forward,this rack being attached to the upper part of the carriage; thus we getthe required niotioii.

On the sliding or cutting-frame N there is a small way or guide, O, onwhich I screw an adj nstable wiper, l?. (See iig. 3.)

'Ighis form and shape of the elongated sliding frame clamps Q Qlby meansof screws.

This sliding frame runs up and down in suitable -guides or ways It.

To prevent the frame N from shaking. or wearing loose I 6X a gib, S,with set-screws T T, in the usual way.

U is a treadle, by which the cutter-gate or sliding frame is brought ormoved downward against the action of the spring V.

Ihe spring raises the cutter-gate and keeps it in an elevated position,when the pressure of theA foot is taken oii the tieadle.

Every time the sliding frame lrises the wiper l? strikes the pawl-arinJ, causing the movements already mentioned. g

By referring to iig. 1, the arrangement of the spring V, treadle U, andlinks W and X may beV plainly seen.

The pin Y prevents the treadle rising too high.

VI do not coniine myself to any particular style or kind of gearing'`under the table-G, but I believe a treadle and spring to be absolutelynecessary. l

Most of the gearing I believe should be made of iron or some similarmetal, while the frame A may' be made of Wood bolted together, :is shownkin the drawing; or, if desired, could be cast-iron.

It is usual to saw the tenons, when inz'iking them, by hand, so as toroughen the sides, that the glue or cement may have a better hold uponthem the peculiar shape of my knives or cutters do ali this. (For shapeof cutters see iig. 4.) But to describe my machine more explicitly Iwill show how to operate it.

Let iis suppose that the machine, shown at iig. l, is before iis; placeon the table a piece of timber, having previously marked ofi' the lengthof the tenou. (See Jtimber, in red, iig. I.) This point where the tenonis to end must be set with the outer edge of the gauge D; adjust andscrew up the clamp O, bring down against the top edge of the timber thedropv E, taking care to have the carriage drawn back far enough for thesaid piece of timber to be fed up to the cutters the desired amount; nowadjust the knives to the proper position on the sliding frame, and alsoto the desired position apart; according to the width oi' the timber Imust regulate the spring; to tighten it is for wide timber, the distancebetween the cutters and the table being increased orlengtheneil;andoi'ct' corsa for narrow timber or stui. The tension of' the spring isaltered hy moving the pin in the link IV.

Now we set the machine in motion by the application of the foot to thetreadle U, by which the said timber is fed up' to the cutters, and thetenon formed on ypatent of November 24, 1868, consists in thehereinbefore-described arrangement ofthe various parts of the feedingdevices', consisting of pawlr J, ratchetwheel K, pinion L, rack M,l'regulating-hook Z.

Another feature is the arrangement and combination of the carriage B,gauge D, and drop E. And still further an important feature is in makinga plane face surface on the-end of the cutters facing the wood; but nocutting-edge to smooth the tenon, as on my knives in my former patentabove mentioned. This plane abrupt ending of the knives provides nocutting surface to cut the wood lengthwise of the grain of the wood,leaves that part to be separated by pressure, thus securing a rough-facesurface, h, ou the tenon, a very desirablevquality to aid. in fasteningor. securing the tenou iu its mortise.

Having now described my invention, I will proceed to set forth what Iclaim and desire to secure by Le ters Patent. :y

I claim- 1. 'Ille combination and arrangement of the pawl and pawllarm Jratchet-wheel K, pinion L, rack M, regulatingfhook Z, and wiper P, fortheY purpose hereinbefore described; I

2. The arrangement of the carriage B, drop E, and gaugel D, as and forthe purpose hereinbei'ore de scribed.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing Witnesses.

WILLIAM v(JrlLlYIfOltE.

Witnesses:

` HENRY M. ROGERS,

O. ARTHUR TONER.

